356628616981 has 32 divisors (see below), whose sum is σ = 449253826560. Its totient is φ = 275532836544.

The previous prime is 356628616979. The next prime is 356628617041. The reversal of 356628616981 is 189616826653.

It is not a de Polignac number, because 356628616981 - 2¹ = 356628616979 is a prime.

It is a super-2 number, since 2×356628616981² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (61) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (356628617981) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18393150 + ... + 18412528.

It is an arithmetic number, because the mean of its divisors is an integer number (14039182080).

Almost surely, 2^356628616981 is an apocalyptic number.

It is an amenable number.

356628616981 is a deficient number, since it is larger than the sum of its proper divisors (92625209579).

356628616981 is a wasteful number, since it uses less digits than its factorization.

356628616981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24145.

The product of its digits is 22394880, while the sum is 61.

The spelling of 356628616981 in words is "three hundred fifty-six billion, six hundred twenty-eight million, six hundred sixteen thousand, nine hundred eighty-one".